[aMorePerfectUnion]

All Christian rites hold to the core beliefs. Once they deny them, churches do not associate with them they are cut off like cancer.

[Petrosius]

All Christian rites hold to the core beliefs. Once they deny them, churches do not associate with them they are cut off like cancer.

But who has the authority to declare what are the core beliefs? Furthermore, since it is claimed that Protestants, despite the large number of denominations, are actually united in core beliefs, what is the justification from cutting off and separating from other Christians over minor issues?

[Salvation]

Christin denominations.